Rotary pump



E. B. HOOVER.

ROTARY PUMP.

APPLICATION FILED m. 5. 1921.

Patented May 2,1922.

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E.' B. HOOVER. ROTARY PUMP.

APPLICATION FILED PHIL-5, 1921.

Patented May2,1922.

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IN V EN TOR.

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rarest series.

EDGAR B. HOOVER, or PASCO, WASHING-TON.

ROTARY PUMP.

. Specification of Letters Patent. Patented ltlay 2, 1922,

Application filed February 5, 1921. Serial No. 442,608.

T all whom it may concern: 7

Be it known that EDGAR B. Hoovnn, a c1t1- zen of the United States, residing at Pasco,

. in the county of Franklin and State of ash- .ington, has invented certain new and useful Improvements in Rotary Pumps, of which the following is a specification.

This invention relates to rotarypumps and has for its objectto provide a means for lifting water or other liquids.

A further object is toprovide a means for lifting water or the like having an enlarged base and a restricted outlet whereby a greatersuction may be obtained and whereby the liquid is given a gradual increasein velocity.

A further object is to provide a means for lifting water and the like which is equally efticient whether placed vertically or inclined.

A further object is to provide a means for properly journalling the lifting elements and for preventing, the ingress of air to the cylinder with detrimental effect. f

With these and other objects in view reference is ,now had to the accompanying drawings, in which- Fig. 1 is a vertical sectional view of the 1 amp;

Fig. 2 is a plan view of the base; V Fig. 3 is a sectional view of the base and inlet; r 1 Fig. l shows pump in an inclined position;

Fig-5 is a sectional view of the bearing spider on-the line 55 of Fig. 6';

Fig. 6 is a plan view ofthe spider-bearing;

'Fig. 7 is a partial sectional view of the foot bearings; and

r 1g. 8 IS a sectional view'of the ournal in' the hollow shaft.

Having reference to the drawings like numerals refer to like parts throughout and the numeral 1 refers to the cylinder which is conical in shape and is composed of an enlarged base 2 having inlets 3 therein, a restricted outlet 4, and tapering side walls 5. Within the cylinder is a conical. shaped conveyor corresponding to the shape of the cylinder which is ground to frictional con tact with the base and side walls thereoff To the cylinder and in prolongation thereof is suitably attached a dischargepipe 7, and within this pipe is a helical conveyor 8 which is also ground to frictional contact with the side walls of the discharge pipe.

The conveyors 6 and 8 respectively are rotated in opposite directions by means of the gear-h1g9, 10, 11 and 12 and the belt 13, (or pulley 14) through the hollow shaft 15 and the solid shaft 1 It is obvious that the conveyors mustopcrate withprecision andthe bearings there for must interfere with the flow of the liquid as little aspossible, therefore the upper and exposed bearings are of peculiar construction, while the lower journals being in the base ofthe cylinder are of the usual type as greater rigidity will naturally be maintained here; The bearing 17 for the hollow shaft being of the nature of a packing nut 18 through which the hollow shaft extends.

lVithin the hollowshaft is also a journal 19in which the solid shaft 16 rotates.

As there is a liability of an air leakage through the bearing in the hollow shaft which would be, detrimental to the action of the pump, I have provided'an orifice 20 in thehollow shaft 15 through which the liquid contents of the pump may cover and surround the journal and thus prevent an air leakage at this point.

The upper bearings are exposed and the bearing 21 guides the conveyor 6 while the bearing 22 guides the conveyor -8. As both of these arealike they will be explained, as one and with reference to Figs. 6 and 5.

23 refers .to the race of the bearing which is attached to the side walls in any suitable manner, with the balls 24; of the usual type,

and with the inner portion or cone 25 formmg With the arms 26 and hub 27 a spider hearing.

The upper edge 28 of the conveyor is at tached to onearm' of the spider and the two rotate together. v

To prevent either shaft from dropping I provide'foot bearings 29 and 30, the foot hearings in turn being supported by a suitable frame work 31.

In operation the conveyors are operated by any suitable prime mover and from the intake or discharge end of the pump as shown in Fig. 1 and Fig. 4, Fig. 1 also showing the inlet or suction pipes 3 which project downward to enter the liquid, and that of Fig. 4 showing the whole base of the pump submerged.

In driving the pump from the discharge end the power is communicated to the solid shaft 16 and through this shaft and the gears 9, 11 and 12, and gear 10, to the hollow shaft 15.

As these two shafts and with them the are no bends in either; thus the friction due claiin- 7 conveyo-rs,'are rotated, the lower edge of the conveyor 6 passes over the floor of the base 2 and over the open ends of theiiilets 3 in the direction of the horizontal arrow shown in Fig. 3; the i-apidinovement of the conveyor 7 creates a partial vacuum over the inlets resulting in the liquid flowing into the cylinder in the direction of the curved arrow shown in Fig. 3. i

As the liquid rises in the cylinder a portion enters the orifice 20 and seals the journal 19, the body of the liquid now rises to and through the restricted outlet with a slight whirling motion and is takenv up by the helical conveyor 8 which, traveling in the opposite direction to the whirling liquid cuts into it, as it were, and through its velocity raises the liquid up the incline of the blade of the conveyor.

Now the larger lower portion of the conical shaped conveyor 6, having a greater relative area than the upper portion, is utilized for the purpose of suction as it is obvious that with the same velocity the larger ,portion will create the greater vacuum and by restricting the outlet the volume of liquid passes therethrough with a slight resistance which with the reaction of the upward movement will tend to a greater density of the liquid which will aid to form a more per-' fect vacuum. v

The inlet 3 and. the outlet 82 is in: a continuous line with that of the pump, i. e. there to curved pipes,,which in the discharge end would causea baclrpressure, is eliminated. Having thus described my invention, I

1.111 arotarypump, the combination of a conical shaped cylinder, a conical shaped conveyor within said cylinder, adischarge.

pipe in prolongation of and attached to said cylinder, a conveyor within said discharge pipe, a means for rotating said conveyors-in opposite directions on a hollow and solid shaft respect vely, a means for forming-an airtight journal in said hollow shaft to prepvent the ingress of air to said cyl nder, a means for ournalling said conveyors against the side walls of said cylinder and discharge pipe, and foot bearings supporting said shafts.

2'. In arotary'pump, the combination of a conical shaped cylinder frustumed to con nect with a discharge pipe, a conical shaped conveyor within said cylinder and ground to operatively engage thebase and side walls thereof, a discharge pipe, ahelical conveyor within said discharge pipe and ground to frictional contact with theside wallsthereof, a means for rotating said conveyors'in V opposite directions .on a hollow and solid shaft respectively, a means for forming. an air tightqournal in said hollow shaft, and a r liquid seal therefor to prevent the ingress of air to thecylinder, a means attached toand rotatable with said conveyors for journalling said conveyors against the side walls of said cylinder and discharge pipe respectively, foot,bearingssiipporting said shaft conveyor within said discharge pipe, a

means for rotating said conveyors in opposite directions on a hollow and solid shaft respectively, a neans for forming" an air tight journal in said hollow shaft consisting of an orifice in said hollow shaft through which the liquid contents of thepiimp may flow to surround. said journal,.a spider hearing attached to and rotatablewith each of said conveyors and having its bearing against the side walls of said cylinderand discharge pipe respectively, and foot bear ings supporting said shafts without the pump-and asuctionpipe attached to said cylinder and projected downward there from in av straight line to form straight continuous passage from the intake tothe discharge.

In testimony whereof I aflixmy signature.

EDGAR HODVER. 

